?? ????? ?? ??? ?? ???? ??? ??? ? ??? ???? ???? ????? ?? ??? ? ??? ???? ??? ?? ????? ?????????? ???? ???????? ???? ???? ?????? ???? ????? ??? ?? ???? ???? ?? ????? ???? ???? ???? ??????.The dirty little bit is actually a phrase in the field of Personal computer. It really is also called modified bit. It refers to a little in memory, which switches